Assignee
Inventors
- Tadashi Katsui (36 patents)
- Keizo Takemura (4 patents)
- Minoru Hirano (24 patents)
- Masumi Suzuki (78 patents)
- Yoshiaki Udagawa (13 patents)
- Masuo Ohnishi (57 patents)
- Kenichi Fujii (165 patents)
US Patent 6454362 · Granted Sep 24, 2002